A technical service bulletin documents a fault a manufacturer has seen often enough to publish a standard diagnosis and fix. It is guidance to technicians rather than a safety campaign.
The crucial difference from a recall is that the work is not free. A bulletin acknowledges the problem exists and explains the remedy, but the owner pays unless the vehicle is still under warranty or a goodwill arrangement applies.
Bulletins are a good way to learn what commonly goes wrong with a model before you buy one.
Why it matters
A long list of bulletins on a model tells you what to budget for and what to have inspected specifically.
How to check it
Search bulletins for the year and model before viewing, and ask the seller whether any of the common faults have been addressed.
Does this apply to the car you are looking at?
Run the VIN or plate and see what is actually on record.
Related terms
Definitions are general guidance, not legal advice. Title rules, total loss thresholds and inspection requirements are set by each state and change over time, so confirm the position with the motor vehicle agency for the state the vehicle is titled in before relying on it.